10. The secretariat introduced informal document GRSG-122-04 a question from a private stakeholder needed clarification on the current UN Regulation No. 107 regarding electric buses. The stakeholder recalled in UN Regulation No. 107, buses with its power source from electric engines were not considered when referring to fire suppression system (FSS) that has to undergo a mock-up test. This stakeholder’s inquiry from GRSG was to know if a bus bodybuilder can get a waiver from a FSS if he is manufacturing electric buses.

11. The experts from Netherlands, Finland and Switzerland all shared similar opinion that UN Regulation No.107 does not establish requirements on Fire suppression systems (FSS) for electric engines. The expert from Switzerland emphasized that the FSS of an electric engine is a completely different system and that UN Regulation No. 100 on Electric power trained vehicles would be a better reference to issues related to the electric engine system. The expert from Canada said issues related to fire on electric vehicles were covered in UN Regulation No. 100 he further explained that issues related to thermal propagation and fire risk associated with electric vehicles are currently handled by the IWG for electric vehicle safety in GRSP and he proposed to present this topic of FSS to the IWG as methods to mitigate fire risk in electric vehicle.

12. The expert from France informed GRSG the element of FSS in electric vehicles was recently discussed at the IWG on BMFE and that thermal propagation on electric vehicles is covered in 03 series of amendment in UN Regulation No. 100. GRSG concluded by referring the private stakeholder to UN Regulation No. 100 regarding FSS on electric buses.